1. Scientific Affairs, American Red Cross , Rockville, Maryland , USA
2. Westat , Rockville, Maryland , USA
3. Vitalant Research Institute , San Francisco, California , USA
4. Department of Laboratory Medicine, University of California San Francisco , San Francisco, California , USA
5. University of British Columbia , Victoria, British Columbia , Canada
6. Bloodworks Northwest , Seattle, Washington , USA
7. New York Blood Center Enterprises , New York, New York , USA
8. Vitalant , Scottsdale, Arizona , USA
9. Department of Medicine, University of California San Francisco , San Francisco, California , USA